/*
 * Copyright (c) 2005, 2006, Oracle and/or its affiliates. All rights reserved.
 * ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 *
 *
 *
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 *
 *
 *
 *
 *
 *
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 */
package javax.swing.plaf.nimbus;

import java.awt.*;
import java.awt.geom.*;
import java.awt.image.*;
import javax.swing.*;
import javax.swing.Painter;


final class ScrollBarButtonPainter extends AbstractRegionPainter {

  //package private integers representing the available states that
  //this painter will paint. These are used when creating a new instance
  //of ScrollBarButtonPainter to determine which region/state is being painted
  //by that instance.
  static final int FOREGROUND_ENABLED = 1;
  static final int FOREGROUND_DISABLED = 2;
  static final int FOREGROUND_MOUSEOVER = 3;
  static final int FOREGROUND_PRESSED = 4;


  private int state; //refers to one of the static final ints above
  private PaintContext ctx;

  //the following 4 variables are reused during the painting code of the layers
  private Path2D path = new Path2D.Float();
  private Rectangle2D rect = new Rectangle2D.Float(0, 0, 0, 0);
  private RoundRectangle2D roundRect = new RoundRectangle2D.Float(0, 0, 0, 0, 0, 0);
  private Ellipse2D ellipse = new Ellipse2D.Float(0, 0, 0, 0);

  //All Colors used for painting are stored here. Ideally, only those colors being used
  //by a particular instance of ScrollBarButtonPainter would be created. For the moment at least,
  //however, all are created for each instance.
  private Color color1 = new Color(255, 200, 0, 255);
  private Color color2 = decodeColor("nimbusBlueGrey", -0.01111114f, -0.07763158f, -0.1490196f, 0);
  private Color color3 = decodeColor("nimbusBlueGrey", -0.111111104f, -0.10580933f, 0.086274505f,
      0);
  private Color color4 = decodeColor("nimbusBlueGrey", -0.027777791f, -0.102261856f, 0.20392156f,
      0);
  private Color color5 = decodeColor("nimbusBlueGrey", -0.039682567f, -0.079276316f, 0.13333333f,
      0);
  private Color color6 = decodeColor("nimbusBlueGrey", -0.027777791f, -0.07382907f, 0.109803915f,
      0);
  private Color color7 = decodeColor("nimbusBlueGrey", -0.039682567f, -0.08241387f, 0.23137254f, 0);
  private Color color8 = decodeColor("nimbusBlueGrey", -0.055555522f, -0.08443936f, -0.29411766f,
      -136);
  private Color color9 = decodeColor("nimbusBlueGrey", -0.055555522f, -0.09876161f, 0.25490195f,
      -178);
  private Color color10 = decodeColor("nimbusBlueGrey", 0.055555582f, -0.08878718f, -0.5647059f, 0);
  private Color color11 = decodeColor("nimbusBlueGrey", -0.027777791f, -0.080223285f, -0.4862745f,
      0);
  private Color color12 = decodeColor("nimbusBlueGrey", -0.111111104f, -0.09525914f, -0.23137254f,
      0);
  private Color color13 = decodeColor("nimbusBlueGrey", 0.0f, -0.110526316f, 0.25490195f, -165);
  private Color color14 = decodeColor("nimbusBlueGrey", -0.04444444f, -0.080223285f, -0.09803921f,
      0);
  private Color color15 = decodeColor("nimbusBlueGrey", -0.6111111f, -0.110526316f, 0.10588235f, 0);
  private Color color16 = decodeColor("nimbusBlueGrey", 0.0f, -0.110526316f, 0.25490195f, 0);
  private Color color17 = decodeColor("nimbusBlueGrey", -0.039682567f, -0.081719734f, 0.20784312f,
      0);
  private Color color18 = decodeColor("nimbusBlueGrey", -0.027777791f, -0.07677104f, 0.18431371f,
      0);
  private Color color19 = decodeColor("nimbusBlueGrey", -0.04444444f, -0.080223285f, -0.09803921f,
      -69);
  private Color color20 = decodeColor("nimbusBlueGrey", -0.055555522f, -0.09876161f, 0.25490195f,
      -39);
  private Color color21 = decodeColor("nimbusBlueGrey", 0.055555582f, -0.0951417f, -0.49019608f, 0);
  private Color color22 = decodeColor("nimbusBlueGrey", -0.027777791f, -0.086996906f, -0.4117647f,
      0);
  private Color color23 = decodeColor("nimbusBlueGrey", -0.111111104f, -0.09719298f, -0.15686274f,
      0);
  private Color color24 = decodeColor("nimbusBlueGrey", -0.037037015f, -0.043859646f, -0.21568626f,
      0);
  private Color color25 = decodeColor("nimbusBlueGrey", -0.06349206f, -0.07309316f, -0.011764705f,
      0);
  private Color color26 = decodeColor("nimbusBlueGrey", -0.048611104f, -0.07296763f, 0.09019607f,
      0);
  private Color color27 = decodeColor("nimbusBlueGrey", -0.03535354f, -0.05497076f, 0.031372547f,
      0);
  private Color color28 = decodeColor("nimbusBlueGrey", -0.034188032f, -0.043168806f, 0.011764705f,
      0);
  private Color color29 = decodeColor("nimbusBlueGrey", -0.03535354f, -0.0600676f, 0.109803915f, 0);
  private Color color30 = decodeColor("nimbusBlueGrey", -0.037037015f, -0.043859646f, -0.21568626f,
      -44);
  private Color color31 = decodeColor("nimbusBlueGrey", -0.6111111f, -0.110526316f, -0.74509805f,
      0);


  //Array of current component colors, updated in each paint call
  private Object[] componentColors;

  public ScrollBarButtonPainter(PaintContext ctx, int state) {
    super();
    this.state = state;
    this.ctx = ctx;
  }

  @Override
  protected void doPaint(Graphics2D g, JComponent c, int width, int height,
      Object[] extendedCacheKeys) {
    //populate componentColors array with colors calculated in getExtendedCacheKeys call
    componentColors = extendedCacheKeys;
    //generate this entire method. Each state/bg/fg/border combo that has
    //been painted gets its own KEY and paint method.
    switch (state) {
      case FOREGROUND_ENABLED:
        paintForegroundEnabled(g);
        break;
      case FOREGROUND_DISABLED:
        paintForegroundDisabled(g);
        break;
      case FOREGROUND_MOUSEOVER:
        paintForegroundMouseOver(g);
        break;
      case FOREGROUND_PRESSED:
        paintForegroundPressed(g);
        break;

    }
  }


  @Override
  protected final PaintContext getPaintContext() {
    return ctx;
  }

  private void paintForegroundEnabled(Graphics2D g) {
    path = decodePath1();
    g.setPaint(color1);
    g.fill(path);
    path = decodePath2();
    g.setPaint(decodeGradient1(path));
    g.fill(path);
    path = decodePath3();
    g.setPaint(decodeGradient2(path));
    g.fill(path);
    path = decodePath4();
    g.setPaint(decodeGradient3(path));
    g.fill(path);
    path = decodePath5();
    g.setPaint(color13);
    g.fill(path);

  }

  private void paintForegroundDisabled(Graphics2D g) {
    path = decodePath1();
    g.setPaint(color1);
    g.fill(path);

  }

  private void paintForegroundMouseOver(Graphics2D g) {
    path = decodePath1();
    g.setPaint(color1);
    g.fill(path);
    path = decodePath2();
    g.setPaint(decodeGradient4(path));
    g.fill(path);
    path = decodePath3();
    g.setPaint(decodeGradient5(path));
    g.fill(path);
    path = decodePath4();
    g.setPaint(decodeGradient6(path));
    g.fill(path);
    path = decodePath5();
    g.setPaint(color13);
    g.fill(path);

  }

  private void paintForegroundPressed(Graphics2D g) {
    path = decodePath1();
    g.setPaint(color1);
    g.fill(path);
    path = decodePath2();
    g.setPaint(decodeGradient7(path));
    g.fill(path);
    path = decodePath3();
    g.setPaint(decodeGradient8(path));
    g.fill(path);
    path = decodePath4();
    g.setPaint(color31);
    g.fill(path);
    path = decodePath5();
    g.setPaint(color13);
    g.fill(path);

  }


  private Path2D decodePath1() {
    path.reset();
    path.moveTo(decodeX(3.0f), decodeY(3.0f));
    path.lineTo(decodeX(3.0f), decodeY(3.0f));
    path.closePath();
    return path;
  }

  private Path2D decodePath2() {
    path.reset();
    path.moveTo(decodeX(0.0f), decodeY(0.0f));
    path.lineTo(decodeX(1.6956522f), decodeY(0.0f));
    path.curveTo(decodeAnchorX(1.6956522464752197f, 0.0f), decodeAnchorY(0.0f, 0.0f),
        decodeAnchorX(1.6956522464752197f, -0.7058823529411633f),
        decodeAnchorY(1.307692289352417f, -3.0294117647058822f), decodeX(1.6956522f),
        decodeY(1.3076923f));
    path.curveTo(decodeAnchorX(1.6956522464752197f, 0.7058823529411633f),
        decodeAnchorY(1.307692289352417f, 3.0294117647058822f),
        decodeAnchorX(1.8260869979858398f, -2.0f),
        decodeAnchorY(1.769230842590332f, -1.9411764705882355f), decodeX(1.826087f),
        decodeY(1.7692308f));
    path.curveTo(decodeAnchorX(1.8260869979858398f, 2.0f),
        decodeAnchorY(1.769230842590332f, 1.9411764705882355f), decodeAnchorX(3.0f, 0.0f),
        decodeAnchorY(2.0f, 0.0f), decodeX(3.0f), decodeY(2.0f));
    path.lineTo(decodeX(3.0f), decodeY(3.0f));
    path.lineTo(decodeX(0.0f), decodeY(3.0f));
    path.lineTo(decodeX(0.0f), decodeY(0.0f));
    path.closePath();
    return path;
  }

  private Path2D decodePath3() {
    path.reset();
    path.moveTo(decodeX(0.0f), decodeY(1.0022625f));
    path.lineTo(decodeX(0.9705882f), decodeY(1.0384616f));
    path.lineTo(decodeX(1.0409207f), decodeY(1.0791855f));
    path.lineTo(decodeX(1.0409207f), decodeY(3.0f));
    path.lineTo(decodeX(0.0f), decodeY(3.0f));
    path.lineTo(decodeX(0.0f), decodeY(1.0022625f));
    path.closePath();
    return path;
  }

  private Path2D decodePath4() {
    path.reset();
    path.moveTo(decodeX(1.4782609f), decodeY(1.2307693f));
    path.lineTo(decodeX(1.4782609f), decodeY(1.7692308f));
    path.lineTo(decodeX(1.1713555f), decodeY(1.5f));
    path.lineTo(decodeX(1.4782609f), decodeY(1.2307693f));
    path.closePath();
    return path;
  }

  private Path2D decodePath5() {
    path.reset();
    path.moveTo(decodeX(1.6713555f), decodeY(1.0769231f));
    path.curveTo(decodeAnchorX(1.6713554859161377f, 0.7352941176470615f),
        decodeAnchorY(1.076923131942749f, 0.0f),
        decodeAnchorX(1.718670129776001f, -0.911764705882355f),
        decodeAnchorY(1.4095022678375244f, -2.2058823529411784f), decodeX(1.7186701f),
        decodeY(1.4095023f));
    path.curveTo(decodeAnchorX(1.718670129776001f, 0.911764705882355f),
        decodeAnchorY(1.4095022678375244f, 2.2058823529411784f),
        decodeAnchorX(1.8439897298812866f, -2.3529411764705905f),
        decodeAnchorY(1.7941176891326904f, -1.852941176470587f), decodeX(1.8439897f),
        decodeY(1.7941177f));
    path.curveTo(decodeAnchorX(1.8439897298812866f, 2.3529411764705905f),
        decodeAnchorY(1.7941176891326904f, 1.852941176470587f), decodeAnchorX(2.5f, 0.0f),
        decodeAnchorY(2.2352943420410156f, 0.0f), decodeX(2.5f), decodeY(2.2352943f));
    path.lineTo(decodeX(2.3529415f), decodeY(2.8235292f));
    path.curveTo(decodeAnchorX(2.3529415130615234f, 0.0f), decodeAnchorY(2.8235292434692383f, 0.0f),
        decodeAnchorX(1.818414330482483f, 1.5588235294117645f),
        decodeAnchorY(1.8438913822174072f, 1.3823529411764675f), decodeX(1.8184143f),
        decodeY(1.8438914f));
    path.curveTo(decodeAnchorX(1.818414330482483f, -1.5588235294117645f),
        decodeAnchorY(1.8438913822174072f, -1.3823529411764675f),
        decodeAnchorX(1.694373369216919f, 0.7941176470588225f),
        decodeAnchorY(1.4841628074645996f, 1.9999999999999991f), decodeX(1.6943734f),
        decodeY(1.4841628f));
    path.curveTo(decodeAnchorX(1.694373369216919f, -0.7941176470588225f),
        decodeAnchorY(1.4841628074645996f, -1.9999999999999991f),
        decodeAnchorX(1.6713554859161377f, -0.7352941176470598f),
        decodeAnchorY(1.076923131942749f, 0.0f), decodeX(1.6713555f), decodeY(1.0769231f));
    path.closePath();
    return path;
  }


  private Paint decodeGradient1(Shape s) {
    Rectangle2D bounds = s.getBounds2D();
    float x = (float) bounds.getX();
    float y = (float) bounds.getY();
    float w = (float) bounds.getWidth();
    float h = (float) bounds.getHeight();
    return decodeGradient((0.5f * w) + x, (0.0f * h) + y, (0.5f * w) + x, (1.0f * h) + y,
        new float[]{0.0f, 0.032934133f, 0.065868266f, 0.089820355f, 0.11377245f, 0.23053892f,
            0.3473054f, 0.494012f, 0.6407186f, 0.78443116f, 0.92814374f},
        new Color[]{color2,
            decodeColor(color2, color3, 0.5f),
            color3,
            decodeColor(color3, color4, 0.5f),
            color4,
            decodeColor(color4, color5, 0.5f),
            color5,
            decodeColor(color5, color6, 0.5f),
            color6,
            decodeColor(color6, color7, 0.5f),
            color7});
  }

  private Paint decodeGradient2(Shape s) {
    Rectangle2D bounds = s.getBounds2D();
    float x = (float) bounds.getX();
    float y = (float) bounds.getY();
    float w = (float) bounds.getWidth();
    float h = (float) bounds.getHeight();
    return decodeGradient((0.0f * w) + x, (0.5f * h) + y, (0.5735294f * w) + x, (0.5f * h) + y,
        new float[]{0.0f, 0.5f, 1.0f},
        new Color[]{color8,
            decodeColor(color8, color9, 0.5f),
            color9});
  }

  private Paint decodeGradient3(Shape s) {
    Rectangle2D bounds = s.getBounds2D();
    float x = (float) bounds.getX();
    float y = (float) bounds.getY();
    float w = (float) bounds.getWidth();
    float h = (float) bounds.getHeight();
    return decodeGradient((0.925f * w) + x, (0.9285714f * h) + y, (0.925f * w) + x,
        (0.004201681f * h) + y,
        new float[]{0.0f, 0.2964072f, 0.5928144f, 0.79341316f, 0.994012f},
        new Color[]{color10,
            decodeColor(color10, color11, 0.5f),
            color11,
            decodeColor(color11, color12, 0.5f),
            color12});
  }

  private Paint decodeGradient4(Shape s) {
    Rectangle2D bounds = s.getBounds2D();
    float x = (float) bounds.getX();
    float y = (float) bounds.getY();
    float w = (float) bounds.getWidth();
    float h = (float) bounds.getHeight();
    return decodeGradient((0.5f * w) + x, (0.0f * h) + y, (0.5f * w) + x, (1.0f * h) + y,
        new float[]{0.0f, 0.032934133f, 0.065868266f, 0.089820355f, 0.11377245f, 0.23053892f,
            0.3473054f, 0.494012f, 0.6407186f, 0.78443116f, 0.92814374f},
        new Color[]{color14,
            decodeColor(color14, color15, 0.5f),
            color15,
            decodeColor(color15, color16, 0.5f),
            color16,
            decodeColor(color16, color17, 0.5f),
            color17,
            decodeColor(color17, color18, 0.5f),
            color18,
            decodeColor(color18, color16, 0.5f),
            color16});
  }

  private Paint decodeGradient5(Shape s) {
    Rectangle2D bounds = s.getBounds2D();
    float x = (float) bounds.getX();
    float y = (float) bounds.getY();
    float w = (float) bounds.getWidth();
    float h = (float) bounds.getHeight();
    return decodeGradient((0.0f * w) + x, (0.5f * h) + y, (0.5735294f * w) + x, (0.5f * h) + y,
        new float[]{0.19518717f, 0.5975936f, 1.0f},
        new Color[]{color19,
            decodeColor(color19, color20, 0.5f),
            color20});
  }

  private Paint decodeGradient6(Shape s) {
    Rectangle2D bounds = s.getBounds2D();
    float x = (float) bounds.getX();
    float y = (float) bounds.getY();
    float w = (float) bounds.getWidth();
    float h = (float) bounds.getHeight();
    return decodeGradient((0.925f * w) + x, (0.9285714f * h) + y, (0.925f * w) + x,
        (0.004201681f * h) + y,
        new float[]{0.0f, 0.2964072f, 0.5928144f, 0.79341316f, 0.994012f},
        new Color[]{color21,
            decodeColor(color21, color22, 0.5f),
            color22,
            decodeColor(color22, color23, 0.5f),
            color23});
  }

  private Paint decodeGradient7(Shape s) {
    Rectangle2D bounds = s.getBounds2D();
    float x = (float) bounds.getX();
    float y = (float) bounds.getY();
    float w = (float) bounds.getWidth();
    float h = (float) bounds.getHeight();
    return decodeGradient((0.5f * w) + x, (0.0f * h) + y, (0.5f * w) + x, (1.0f * h) + y,
        new float[]{0.0f, 0.032934133f, 0.065868266f, 0.089820355f, 0.11377245f, 0.23053892f,
            0.3473054f, 0.494012f, 0.6407186f, 0.78443116f, 0.92814374f},
        new Color[]{color24,
            decodeColor(color24, color25, 0.5f),
            color25,
            decodeColor(color25, color26, 0.5f),
            color26,
            decodeColor(color26, color27, 0.5f),
            color27,
            decodeColor(color27, color28, 0.5f),
            color28,
            decodeColor(color28, color29, 0.5f),
            color29});
  }

  private Paint decodeGradient8(Shape s) {
    Rectangle2D bounds = s.getBounds2D();
    float x = (float) bounds.getX();
    float y = (float) bounds.getY();
    float w = (float) bounds.getWidth();
    float h = (float) bounds.getHeight();
    return decodeGradient((0.0f * w) + x, (0.5f * h) + y, (0.5735294f * w) + x, (0.5f * h) + y,
        new float[]{0.0f, 0.5f, 1.0f},
        new Color[]{color30,
            decodeColor(color30, color9, 0.5f),
            color9});
  }


}
